Nov 08, 2026 • Leetcode
Reverse Vowels of a String
Given a string s, reverse only all the vowels in the string and return it.
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Nov 07, 2026 • Leetcode
Count Binary Substrings
Given a binary string s, return the number of non-empty substrings that have the same number of 0's and 1's, and all the 0's and all the 1's in these substrings
Read more →Nov 06, 2026 • Leetcode
Maximum Repeating Substring
For a string sequence, a string word is k-repeating if word concatenated k times is a substring of sequence. The word's maximum
Read more →Nov 05, 2026 • Leetcode
Cells with Odd Values in a Matrix
There is an m x n matrix that is initialized to all 0's. There is also a 2D array indices where each indices[i] = [ri, ci] represents a 0-indexed location to pe
Read more →Nov 04, 2026 • Leetcode
Validate IP Address
Given a string queryIP, return "IPv4" if IP is a valid IPv4 address, "IPv6" if IP is a valid IPv6 address or "Neither" if IP is not a correct IP of any type.
Read more →Nov 03, 2026 • Leetcode
Goat Latin
You are given a string sentence that consist of words separated by spaces. Each word consists of lowercase and uppercase letters only.
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